Machine for manufacturing fishing nets automatically



Get. 22. 940. T N|SH|GUCH| 2,219,015

MACRINE FOR MANUFACTURING FISHING NETS AUTOMATICALLY Filed Au 8, 1959 7Sheets-Sheet 1 A TTORNEYS.

Oct. 22, 1940. T, NISHIGUCHI 2,219,015

MACHINE FOR MANUFACTURING FISHING NETS AUTOMATICALLY Filed Aug. 8, 19397 Sheets-Sheet 2 1 Jase,

0 ol 0 HP" 7 370 O I 5 as INVENTOR:

v TAmo msmevcm WWWMM A TITORNEYS.

Get. 22. 1940. N|SH|GUCH| 2,219,015

MACHINE FOR MANUFACTURING FisHI-NG NETS AUTOMATICALLY Filed Aug. 8, 19397 Sheets-Sheet I5 IN VEN TOR: 8 na -B78 9 Oct. 22 1940. 'r. NISHIGUCHIMACHINE FOR nnumcwnme FISHINGNETS AUTOMATICALLY 7 Sheets-Sheet 4 FiledAug. 8, 1959- INVENTORV: IAKA N|5H|GU I 1 AT'I'ORNEYS.

OCtH ZZ. 1940- T. NISHIGUCHI 2,219,015

MACHINE FDR MANUFACTURING FISHING NETS AUTOMATICALLY Filed Aug. 8, 19597 sheets-sheets Oct. 22. 1940.

T. NISHIGUCHI MACHINE FOR IANUFACTURING FISHING NETS AUTOMATICALLY FiledAug. 8, 1959 '7 Sheets-Sheet Oct. 22. 1940.

T. NISHIGUCHI MACHINE FOR IANUFACTURING FISHING NETS AUTOMATICALLY FiledAug. 8, 1959 7 Sheets-Sheet 7 I Frill/Fill Flt/ll!!!ill/Illlll/l/lf/fllll mw A TTORNEYS.

Patented Oct. 22,1940

UNITED STATES.

MACHINE FOR MANUFACTURING FISHING NETS AUTOMATICALLY Takao Nishiguchi,Yokkaichi, Miye-Ken, Japan Application August 8, 1939, Serial No.283,922

. 3 Claims. (Cl. 96-21 The present invention relates to an improvedmachine and amethod for, making a double knotted or a single knottednet.

In the accompanying drawings I have shown the best form in which I havecontemplated making the machine embodying the apparatus of my invention,and said invention is fully disclosed in the following description andclaims.

Figure 1 is a front elevation of the net making machine according tothis invention;

Figure 2 is a right side elevation;

Figure 3 is a section .along the line III-III of Figure 1; a

Figure 4 is a section along the line IV-IV of Figure 1;' p I I Figure 5is a left side elevation;

Figure 6 'is a section along the line VI--VI of Figure 1'; v

Figure '7 is a front view of a needle for drawing a warp thread;

Figure 8 is a nism for operating a thread Figure 9 is a partialperspective of nism for forming theknots of a net.

Figure 10 is a perspective of a warp thread tension roller;

Figure 11 is a side section of forming the knots of the net.

Figure 12 is a perspective of a drawing needle operating mechanism;

Figure 13 is a perspective of a push plate and middle plate slidingmechanism; Figure 14 is a perspective of a formed net de liveringmechanism;

Figure 15 ,is a view showing the'c'ourse of the partial perspective of amechaguiding plate;

amechaa mechanism for .net thread; and

Figures 16 to 24 are partial views showing the order of the stages ofmaking the nets. Throughout the views the same reference numbersdenotethe same parts.

The following is the explanation of the manner of performing thisinventionwith the appended drawings:

As shown in Figs. leftside main frames of connecting rods 3 and 3'. uponwhich a main shaft 4 is mounted and provided at its right end with adriving wheel 5 adapted to be turned in the direction indicated byarrows by means of an endless belt 6. The shaft '4 is caused to bestarted by a belt shifter I, and has a hand wheel 8 fixed to its leftend. Within the auxiliary frame 3' there is fixed to shaft 4 a smallgear 9 which meshes with a large 1 to 3, to a pair of right and I and Iare fixed by means gear") see Fig. 5) fixed upon a second shaft I Ipivoted thereto 26 pivoted to the ing rod 2 and 2 auxiliaryframescenters.

mounted on the frame of the machine. To the right end of said shaft llare. fixed a cam l2, and further cams", l4, l5, l6 exteriorly of andwithin the auxiliary frame 3,.respe'ctively.

An arm I! fixed tothe frame'3 has arod l8 5 and provided at its lowerend with a roller I9 which engages in'a guide slot- 20 of the cam 12.At-theupper end of the rod is a projection 2| capable of being shiftedtoward the right and left when the roller l9'isjrnoved 10 along theguide slot 20 by the rotation of the cam l2. The cam I3 has; as shown inFigure 4, an'outer guide slot 22 and an inner guide slot 23, and alsohas'a camwheel 24 fixed to its inside which is provided with a guideslot'25. The outer 15 slot 22 has a roller 23 engaged therewith asindicated in Figure 2, which is supported by the upper end ofa'rockingrod 2i fixed t'o a shaft lower rear part of the frame 3. Theshaft 26 is actuatedby the movement of said 20 roller 28. A roller 30engaged in the inner guide slot 23 is also engaged in'a closed ringslotjformed 'at the end of a connecting rod 29, and the shaft 1 I hasits projecting end engaged in a slot formed at substantially the centralpart of said connect- 5 ing rod whose upper end is connected to one endof a rocking rod 3| in order to rock-fthe same. As "shown in Fig. 4, inthe guide slot of the cam wheel 24 is engaged a roller 34 whichisdisposed near the'upper end of an arm" 33- connected at its lowerendwith a shaft 32 mounted on the center of the lower portion of the frame.The position atwhich a connecting rod 33' is attached to the arm 33 ismade freely regulatable.

The upper end of 'rod 33 ispivoted to" a connect- 35 and arm33 isthusrocked right and left along the guide slot 2.") by the rotation of cam24. As shown in Fig.3, the cam 14' has engaged therewith a'ro'ller 31which'is mounted" on the middle portion of a lever having .a closed slotin which one end of the cam H is inserted; while the lever is connectedto a rocking-rod 38 at its other end ('see Fig. 2), so that it may be'rocked by the rotationof the cam l4. The rollers and 42 at one end oflevers-39 andengage with the cams l5 and 16, respectively,'whileconnecting rods 43 and 44 are' connected-to'theother ends of the samelevers 39 and 40 which in turn are mounted together plvotally on thesupporting shaft 45 of the'frame' latsubstantiallftheir The connectingrods 43 and "44 I are moved up and down respectively by'fmeans. ofrollers 4|, 42 andklevers 39,;40 'by therotation. of the cams l5 andli:The frame hasa-short shaft 46 fixed thereto on its rear'po ion on whichis rotatably mounted a gear 49 having upon its outer periphery a cam 48secured which has a guide slot 41, and a gear 50 adapted to mesh withgear 49 is fixed upon shaft II (see Figures 4 and 8). As shown in Figure8, in the guide slot 41. of cam 48 runs a roller 58 mounted on one endof a fiat member 52 mounted pivotally on a supporting arm 5| fixed tothe middle of the rear portion of the frame I, the other end of the saidflat member 52 being formed to a U-shape.

A supporting rod 55 secured to the frame I is bent at one end isprovided with a guide slot 55 in the same plane with which there is acorresponding guide slot 51 in the frame I. A projection 59 is fixed toa member 58 which extends through these slits 50and 5! and is engagedwith the said U-shaped member 54. The member 58 is provided at the leftend with a long projection 90 engaging a rectangular ring guide member65, which is secured to the inner surface of the vertical part of theframe 64 extending over substantially the whole distance between theframes I and I, the lower part of the said frame 64 being hinged by apin 63 to a U-shaped arm 82 formed upon the outer end of a rocking rodBI, whose inner end is fixed to the shaft 26 within frames I and I. Astud 86 is screwed to the outside of the vertical part of the said frame64, and a crank arm 68 is pivoted to the shaft 61 fixed to the inside ofthe frame I. The said stud 66 extends through the ring part I0 of avertical arm 59, and the horizontal arm II of the crank arm 68 isprovided at one end with a roller I2 which engages a cam I3 secured tothe shaft II. To the transverse part of said frame 64 is fixed a combshaped plate I5 with the ends of the teeth turned up and provided withguide holes I4 for receiving the warp threads of the net. Thus, with therotation of the cam wheel 48, the frame 64 moves right and left throughmotion transmitting mechanisms such as the roller 53 engaged. with theguide slot 41 of said cam wheel 48, fiat member 52, projection 59,member 58 and projection 60, and also moves up and down through theroller 34 engaged with the guide slot 22, arm 21, shaft 26 and rockingrod 6|, with the rotation of the cam I3. At the same time, by therotation of the cam I3 the frame 64 is moved to and fro through theroller I2 engaged with the cam I3, crank arm 68 and stud 55.

Such up-and-down, right-and-ieft, and toand-fro movements of the frame64 and thread guide plate 15 are necessary for winding the warp threada, which has passed through the guide hole I4, around a knotter I4I asfully explained hereafter with reference to Figures 18 to 20 and areuseful to the operation of knotting the warp and shuttle threads to makea fishing net.

As illustrated in Figures 1 and 5, a cam I6 is fixed to the shaft II atthe outside of the left frame 3', and a lever 11 is engaged with thepro- Inside the frame 3 there are cam wheels I3 0 and 24' fixed to theshaft II, which have similar constructions to the right side cams I3 and24 and arranged symmetrically and operate in the same manner as thelatter. The gear I0 is fixed upon the outer periphery of the cam I3.

As shown'in Figure 6, at the outside of frame I the cams 85, 86 and 81are secured to the shaft II. A lever 89 is engaged with the shaft II atits yoke end and has a roller 88 which engages the periphery of the cam85. The lever 89 is connected at its outer end with a rocking arm 90,secured to a brake rod 9|. Therefore, if the cam rotates, the brake rod'9I will be moved against the tension of springthrough the lever 89 andarm 90. While the rotation of the cam 86 rocks a C-shaped crank arm 92pivoted to the frame I, so that a braking wheel 95 fixed to a finishednet delivery shaft 94 mounted on the front part of the frame may bebrought into engagement with a braking rod 96 through a connecting rod93, and by drawing the rod 93 said shaft 94 will cause partial rotationof said shaft 94 in a clockwise direction. The cam 91 has the sameconstruction and operation as the mentioned right side cam I5 and isdisposed symmetrically with it. I

The frame I is provided at the middle of its rear part with a shaft 91as illustrated in Figure 14, on which is mounted a gear 98. A flange I02on the side face of the said gear has-a guide slot 99 and projection I00formed at its outer periphery and also is provided upon its side wallwith a cam IOI. Gear 98 meshes within frame I with a gear I03, on shaftII as shown in Figure 6. As shown in Figure 13, in the guide slot '99 aroller I05 runs which is carried upon one end of a stepped flat memberI04 connected to the frame I, the said fiat member extending through theframe I' at themiddle thereof and also having one end of a supportingplate I06 connected to its end. The said supporting plate I06 has aplate I08 fixed thereto on which equally-spaced notches I0I are formed.It is slid to the right and left by the rotation of the cam I02, and theprojection I00 of gear 98 is engaged by a roller H0 at one end of abranch of a braking rod I09 pivoted to the frame. Further, the saidbraking rod I09 acts upon a braking wheel II2 fixedto a net take-uproller III as indicated in Figure 6. The cam IOI, as shown in Figure 14,is engaged by a roller H5 at the upper end of a rocking rod II4 pivotedto the base of bearing arm II 3 of a shaft 91 which is mounted on therear part of the frame. To the lower end of the said rod H4 is connecteda shaft II9 through a connecting rod IIS and rocking rod III. The shaftII9 has a branch II 8 and is mounted rotatably upon the lower end of theoutside of the frame I. Above shaft II9 a channel member I20 is attachedto the frame and an L-shaped member I2I is secured to said channelmember which is provided with a guide slot I22 to make the setting ofthe position of member I 2I regulatable.

To the projecting part of the said member I2I is pivoted a segmental camI24 kept in close conis fixed to the shaft '32 within the lower portionof the frame I A crank rod I28 is connected to rod I26 and has a guideslot I21 and the upper end of rod I28 is connected to an arm I29 forsupporting the thread tensioning rod. By the mtation of the shaft 32 thesaid arm I29 is moved up and down automatically to loosen and tensionthe thread.

Now, referring to Figures 1, 3 and 15, on the frames I and I are fixedsupporting frames I32 and I32, beam frame I33, pentagonal supportingframes I34 and I34 and supporting vertical frames I35 and --I35, thesaid supporting frames I32 and I32 being surmounted by a wooden bobbinboard I3I on which warp thread bobbins I38 are arranged. A"roller I36 ismounted rotatably on each of the above-mentioned supporting frames, anda finished net winding roller I38 is mounted on the supporting arms I31and I31 projecting backward-of the frames I and I, The said arms areprovided with-a shaft I39 as shown in Figure 10. Upon the outside of thearm 1 I31, the shaft I39 is provided at its end with a rocking rod 38and receives rocking motion through the cam I4, roller 31 and rod 36.While, on the outside of the arm I 31', the other end of said shaft isattached a segmental braking wheel I4I engaged with the braking rod 9|actuated by the cam 85. The rocking arms I42 and I42 have their upperends fixed to the shaft I39, and a shaft I43 is connected at its lowerend to the arms I42 and I42. The thread delivered from the bobbin I38 ispassed over roller I36, take-up roller III, shaft I43 and the guidehole" of the plate 15 and then each warp thread is knotted together witha shuttle thread delivered from a shuttle I64 'to make a net, and thethus-obtained net is delivered through the finished net delivery shafts94, 32, 26 and I38.

Next, with reference to Figures 9 and 11, a

channel-shaped knotter chamber I44 is fixed to a roller 38 at its otherend engaged with the inner guiding slot 23 of the cam I3 (Fig. l) Theknotter chamber I44 comprises rods I49 each of which 'carries a pinionI46 and has a knotter I41 at the bottom, in such manner that each rodmay be rotated upon bearings I49 and I49 provided at the upper and lowerparts of the saidchamber, these rods I48 being arranged ,with a certainspace between them. A group of pinions I46 is engaged with a long rackI68 so as to rotate together. A member I58 fixed to the outer end of thesaid rod is provided with two pins I5I which engage the, pin 2I of therocking rod I8 communicating by means of its lower roller I9 with thecam wheel I2, so that the knotter chamber I44 is moved to and fro bymeans of the roller 38, lever 29, rod 3I and shaft I by the rotationofthe cam I3 and thus swings the knotters I41. Further, by the rotation ofthe cam I2 the lever I8 is rocked along the slot 28 and the knotters I41are rotated simultaneously through motion transmitting mechanisms suchas the pins 2| and I5I, member I58 and the long rack I58. Such swingingand rotat 'ingmovem'ents of the knotters I 41 are necessary for making anet as illustrated in Figures 16 to 24, which will be explained clearlyhereafter.

The comb plate I53 is fixed to the angle mem ber supporting plate I52secured upon the'frame under the knotter chamber I44 and is providedwithnotches I54, each of which is spaced to cooperate witheach of theknotters I41.' 'Within said comb plate thesaw-toothed plate, I88 islocated being mounted on the aforementioned supporting plate I86. Anopen casing -I55 is mounted on the'frames I and I, along the supportingplate I52, and is provided at the front,

portion with a short shaft I56. The connecting lever 44 connected tosaid shaft I56 is connected at its lower end with the rocking lever 48so as to operate the casing I55 by the movement of the cam I6. To therear wall of the casing I55 is fixed a plate I58 having notches I51corresponding to the knotters I41, and under the same there is arack-shaped member I59, while toits front wall is fixed a comb plate I62having notches I6I upon the corresponding notches I51 and I6I on which ashuttle I64 is mounted containing a shuttle bobbin I63. Each shuttle I64is set upon the rack I59 by means of a finger I65 provided at the bottomportion of said shuttle. The shuttle bobbin I63 has a hole I66 at thecenter thereof and is rotatably mounted on the small pin I6 1,

of the shuttle I64 and is retained in place by A-shape'd spring I68. 3 I1 As shown in Figures 11 and-12, upon the outer sides of the frames Iand I there are'provided short shafts I63 and I69 (see Fig. 6) whichhave guide frames I18, I18 and HI, I1I', pivotedthereto, the said framesI18 and I18 having lugsI12 and H2 at their lower portions which arefixed t0 the frames, while HI and HI have enlarged portions I13 and I13at their ends and are provided at the lower portions with lugs I14 andI14, the said lug I14 being disposed in cooperating relation with thecam I5 by means of the roller 4I through the connecting rod 43 androcking rod 36, while the lug I14 corresponds to the mentioned lug I14and has similar connecting mechanism. Lugs I16 and I16 are provided atboth ends of the angle I16 between the guide frames HI and HI. To eachlug is secured a; pair of small axes I11 and I11 on which rollers I18and I18 are rotatablymounted. The roller I13 is fitted in the guideslots of the frames I18 and I18 and the end of its shaft'I11 is actuatedthrough the connecting rods 36, 33 and 33 by the rotation of the cam 24with which the roller 34 (see Figure4) is engaged. The roller I18'engages in the guide slots of the frame "I and I1 I Further, a plate I88having needles I19 arranged in parallel is fixed to the rear of thebottom 'portion of the angle I15, the said needles corresponding to theknotters I41, so that with the rotation of the cam 24, the rollers I18and I18 run along the"guide slots of the frames I18 and I1I respectivelyand consequently the angle I16 on the lug I16 fixed to the shafts I11and I11 of these rollers I18 and I18 is moved to and fro'with the combplate I88 by the reciprocal rolling movement of the rollers I18 and I18,with the result that the needles I19 also perform a to-andfro movement,which effects a net forming operation as explained in Figures 19 to 21.

When as indicated in Figures 12 and 11 the connecting rod 43 descends byvirtue of the movement of the lever 39 and consequently the guide framesHI and I1 I descend to the position indicated in broken lines in Figure11 withtheir pivot I63 as the fulcrum, the angle I15 and plate I80,,and' accordingly the needles I19 are inclined towards the position alsoindicated in broken lines, such inclining movement of the needles I19being necessary for the net forming operation described hereafter withreference to Figure'21.. At this point, the shuttle supporting frame I02brings the angle member I60 into engagement with the warp thread loop bythe raising of the connecting rod 44, thereby releasing the said loopfrom the needles as explained hereinafter.

Next will be explained briefly the operation of making a fishing netwith double knots in this machine with reference to Figures 16 to 24.

The warp thread a delivered from .th bobbin I30 extends the previouslyformed knot between the angle or supporting members I06 and I52, passingthrough the guide hole 14 of the thread guide plate 15 and the notch I54of the comb plate I53 and thenthrough the notch I01 of thesaw-toothedplate I08, while the shuttle thread 2) from the bobbin I63 inthe shuttle I54 arrives at the knot through the notch I54 of the combplate I53 as shown in Figure 16. Thus, when the machine is started, theguide plate 15 is shifted to the left one pitch together with the plateI08, while being slightly lowered by the actuating mechanisms describedbefore. At the same time, the knotter I41 moves forward while making onerotation to the right, and presents the condition as shown in Figure 17,when the hole 14 of the thread guide plate 15 rises to the middle partof the knotter I41 and also rotates twice over the I knotter I41 asillustrated in Figure 18 and stops immediately beneath the same as shownin broken lines and takes its position at the center of the notch I54.

Next, the knotter I 41 performs a reverse rotation, namely, one rotationto the left as shown in Figure 19 and the warp thread a is crossed belowthe knotter to form a double thread ring, whereupon the needle I19 isbrought forward as indicated in Figure 20 and passes through the hollowpart of the knotter I41 around which the double thread ring is wound. Inthe meantime, the thread guide plate 15 is operated to engagethe warpthread a with the needle I19 and, as shown in Figure 21, withdrawing theloop of the warp thread a through the double thread ring, passes overthe shuttle I64. As explained before, the

needle I10 inclines downward and at the same time the frame I62 servingto support the rear part of the shuttle is raised to allow-the tail ofthe shuttle to pass through the loop of the warp thread a, as indicatedin broken lines in Fig. 21. Hence, if the loop is released from theneedle I19 by the lifting angle member I50 of the frame I52, when it isdrawn along the under surface of the shuttle by the weight of the rollerI43 which causes a tension of the warp thread to be effected and aftercatching and pulling out the shuttle thread b, passes .through thehollow part of the knotter I41, so that although the warp a at lengthreturns to the original position, the shuttle thread passes through thehollow part above and remains caught by the thread a as illustrated inFigure 22. Then, the plate 84,

moves forward, while the knotter I 41 recedes, and since the lowerportion of the knot which consists, of the warp thread a and shuttlethread 2) is held back by the plate 04, the knotter I41 is easilyreleased from the knot above because of its rearward movement. Next, thethread rings above formed loosely and doubly at the front and back willfirst have one ring, for example, the front ring, suitably tightened andthen the back ring strongly tightened.

The thus-formed knot is lowered to a desired distance by the rotation ofthe pulling-off roller 94 shown in Figure 15 and takes up the positionshown in Figure 16. Then, the tensioning roller I43 is lifted tocontinue the next knot forming operation as explained before. In thenext operation the warp thread a is shifted by one pitch in onedirection, for instance, to the right to carry out the knottingoperation already referred to with the adjacent shuttle thread b, thusforming a strong double knot.

It is needless to mention that the present invention is applicable to asingle knot net.

Having now fully described my invention, I claim:

1. Machine for making nets, which comprises a movable knotter chambermember, a plurality of knotters having knotter heads and arrangedtherein, a driving mechanism for rocking said chamber to and fro, amechanism for rotating said knotters intermittently, a plurality of warpthread bobbins, a thread guide plate with a number of perforationstherein serving to pass said warp threads therethrough, a mechanism forwinding warp threads upon the knotter heads by imparting up and down,right and left and to and fro movements to said plate, a plurality ofshuttles for containing shuttle bobbins, a movable casing serving tocontain a row of said shuttles, an actuating link mechanism for rockingsaid casing with a supporting shaft as the fulcrum, a movable anglemember having rollers at both sides thereof and carrying a row ofneedles, guide rails for allowing the rollers at both sides of the anglemember to travel reciprocally thereon, an actuating link mechanism formoving said angle member together with the needles forward and backwardabove the shuttles so as to allow the needles to first pull out warpthread loops through the knotter heads and then release said warp threadloops after the same have thus been pulled out, an operating mechanismfor passing the mentioned released warp thread loops along the bottomsof the shuttles to pull them into the knotter heads and bring out theshuttle threads with them and operating means for tightening the knotsinitially formed loosely by the warp and shuttle threads.

2. The machine for making nets, according to claim 1, wherein theactuating mechanism for rotating the knotters simultaneously comprises'pinions fixed to the knotters, movable racks engaged with said pinions,link members for causing said racks to move, and a cam engaged by aroller upon one of said link members.

3. The machine for making nets according to claim 1, wherein the drivingmechanism for rocking the knotter chamber member to and fro comprises arocking rod fixed to the body of said chamber member, link membersconnected to said rod, a roller connected to one of said link members,and a cam engaged by said roller.

TAKAO NISHIGUCHI.

